Luo Lie took a breath of air conditioning secretly. If Bai Yunfei really had the intention to harm him, he would never be spared from such a distance.

Bai Yunfei threw the syringe on the ground and said softly: "You can feel the mystery when you hold some objects in your hand. You can actually tell whether there is a steel needle in this syringe by weighing it."

Luo Lie nodded. At this time, the corpse began to melt. Although Bai Yunfei expected that the steel needle was poisonous, he did not expect that after so many years, the toxicity had not diminished. Moreover, it was so severe that it could melt the flesh and blood of the corpse.

After a while, the body had turned into a pool of black liquid, with shiny mercury visible in it, and a black cylinder was exposed. Bai Yunfei thought it was another syringe, but when he looked closely, he was obviously much smaller than the one just now. He was also very curious and picked it out. Put on gloves, wiped the liquid on the surface with a cloth, and then twisted it up and saw that it was just an ordinary wooden cylinder. Unscrew the cover of the cylinder and sealed a roll of silk as thin as a cicada wing.

Unfolded the silk roll, but saw rows of small characters embroidered with black thread, Luo Lie could not suppress his curiosity and came to Bai Yunfei. On the silk roll was embroidered with a secret to practicing flying swords.

Luo Lie himself is an expert in using flying knife hidden weapons. Although he only glanced at it briefly and realized that the secret book was profound and exquisite. Although he was interested in studying it in detail, it was a pity that the secret book was obtained by Bai Yunfei, so it was inconvenient to speak.

Bai Yunfei handed the silk roll to Luo Lie, "You take it, it's useless for me to keep it." He observed it carefully. Although Luo Lie concealed it well, he was still caught by him when he saw the secret book flashing slightly.

Luo Lie didn't take the silk roll politely to him, and smiled and said, "Then I'm not polite."

Bai Yunfei half-jokingly said, "There are many treasures in this underground palace. When you encounter what I want next time, don't grab it from me."

Luo Lie laughed and said, "A gentleman loves money and takes it with his own way. I will definitely not snatch the things Mr. Bai gets first."

Bai Yunfei secretly scolded this boy for being sloppy, why didn't he say that a gentleman would not take away what he loved? He was simply telling himself that the first person would come first. It seemed that the favor he gave him was in vain. Luo Lie was not grateful. He looked at the corpse that had turned into a pool of liquid, and found that the mercury shining in the corpse gathered together, and then slowly flowed into the depths of the cave.

Luo Lie also noticed this situation. At first, he believed that it was because of the terrain that mercury flowed from high to low. But when you look closely, the mercury flowed into a groove with a thumb width and quickly descended from the groove. Under the irradiation of the flashlight beam, a silver signpost was formed.

Luo Lie and Bai Yunfei both knew that mercury was poisonous. If a person was poisoned, he would have hallucinations. To be cautious, both of them covered their mouths and noses and followed the trajectory of mercury flow for twenty or thirty steps. A huge stone avatar appeared in front of him. Judging from the appearance, it should be the ape man's avatar. His eyes were wide open, his mouth was opened to the limit, revealing the fangs in the outlet, and the height between the upper and lower lips was about three meters, and there was another black hole.

The entrance of the cave was not closed, and mercury flowed straight into the mouth of the ape people from the tiny grooves.

The two of them approached the entrance of the cave and shone the flashlight below at the same time. They saw a vertically downward cave below. The light beam of the flashlight hit the bottom and was reflected by the flat liquid level as a mirror. The entire cave suddenly became brighter.

The two of them couldn't help but hold their breath, and the liquid below was filled with silver light, and it was all full of mercury.

Bai Yunfei shook his head at Luo Lie, and his heart began to retreat. Although they were not weak in martial arts, the cave below was filled with rich mercury steam. If excessive mercury steam was inhaled, it would inevitably cause damage to their bodies. Bai Yunfei had always been a person who cherished his own feathers. He came to repay Mu Sanshou's favors not to send Mu Sanshou's life.

Luo Lie observed with the light beam for a while and pointed below.

Bai Yunfei looked in the direction of his finger and noticed that there was a rudder-like mechanism on the wall on the west side of the cave, but the location was close to the mercury liquid level, less than two meters away from the liquid level.

Luo Lie made a gesture and signaled that he wanted to go down.

Bai Yunfei thought to himself, knowing that the bottom was covered with poisonous air, Luo Lie insisted on going. It seemed that the secret was under the mercury liquid level. He nodded, feeling that he was a little lack of oxygen, so he retreated backward. Luo Lie also took a few steps back and came to a relatively fresh place. Bai Yunfei took a careful breath, but saw Luo Lie take out a gas mask from his carry-on equipment and put it on his head.

Seeing that Luo Lie was so well prepared, Bai Yunfei was even more convinced that he knew the situation inside before coming here. In fact, it was no wonder. After all, Luo Lie had already entered here before, but Bai Yunfei did not expect that Luo Lie was familiar with the terrain because he got information about the underground palace from Lan Ximei.

Although Luo Lie could hold his breath for a long time, he did not dare to take risks easily. After stopping the equipment, he fixed the rope and prepared to go down.

Bai Yunfei secretly admires Luo Lie's courage. He must know that once Luo Lie goes down, his fate will be controlled by his own hands. As long as he has the intention to harm him, Luo Lie will not have any chance of life. Does he have such great confidence in himself? Is he sure that he will not harm him?

Luo Lie made an OK gesture to Bai Yunfei. Bai Yunfei helped to check the fixing of the rope. The two of them just exchanged eyes, and Luo Lie slid down without hesitation.

Although Luo Lie could not determine whether Bai Yunfei was an enemy or a friend now, he could determine that he would not dare to act rashly before the things Bai Yunfei wanted to seize appeared. Not to mention the endless strange creatures underground, the complex road would make people lose it. He expected that Bai Yunfei would not dare to take such a big risk.

Bai Yunfei watched Luo Lie climb down slowly, and soon determined that Luo Lie was deliberately trying to kill time. Bai Yunfei could not guarantee that he would hold his breath for a long time. In this place where mercury steam was everywhere, he did not dare to breathe freely, so when he felt hypoxia, he had to choose to return to the safe area outside to breathe. After breathing, he dared to return to the front of the mercury cave to watch the progress. Even if he was fast, it would take time to go back and forth. During this period, Luo Lie naturally broke away from his surveillance.

Arnold coughed constantly by the smoke, and all his tears and snot flowed out. He couldn't see where Zhang Changgong was. He couldn't help but feel nervous and whispered: "Brother Zhang." There seemed to be a hazy figure in front of him. Arnold wiped his tears while looking at it. His right hand quietly slid down to his waist to touch the dagger. As soon as his hand touched the handle, the figure broke through the smoke and suddenly came to him. Even though Arnold's eyes were blurred, he still judged from the other party's figure and movement that the person could never be Zhang Changgong.

Before Arnold could pull out the dagger, a powerful cold palm strangled his throat. It was the beast covered with scales. He picked up Arnold with one hand. Arnold's throat was strangled. He didn't bother to pull out the dagger. He grabbed the other party's wrist with both hands, kicked his feet in turn, trying to struggle out of the beast's control.

Arnold is burly and has strong strength, but he can't compete with the other party with all his strength. As the opponent's palm becomes tighter and tighter, Arnold's strength quickly fades, and his struggle becomes weaker and weaker.

When life and death were hanging on the line, a burly figure rushed towards the beast from behind, raised the feather arrow in his hand and stabbed it hard behind the beast's neck. At the critical moment, it was Zhang Changgong. Zhang Changgong only had the last feather arrow forged with the earth's Xuan Crystal. He dared not use it easily. Of course, his longbow had been broken by the beast, and now he could only hold the feather arrow in his hand to fight with the beast in close combat.

Before Zhang Changgong could approach him, the beast had already noticed that it seemed as if there were eyes behind his head, and grabbed Arnold and threw it to the attacker behind him.

Zhang Changgong threw a mouse and had to withdraw his feather arrow. He wanted to catch Arnold, but he could not cushion Arnold's rapid power. He was hit by Arnold's body. The two of them rolled and fell to the ground, both of them scattered.

Arnold whispered: "Go away..." It's better to die a person than to die two people. In front of the powerful beast, the two of them are no match for each other.

Although Zhang Changgong also understood this truth, he would never give up his companions and leave. A real man must be upright even if he dies.

Looking at the beast approaching step by step, Arnold hurriedly touched the dagger, but found that the dagger was lost in the battle just now.

Zhang Changgong raised his pistol and fired at the beast. The bullet hit the beast's chest and made a snatching sound. The beast's body staggered slightly due to the impact of the bullet, but the bullet obviously could not successfully repel him.

Zhang Changgong fired a second shot, but this shot broke the arrow, inserted the tip of the horn forged with the earth's Xuan Crystal into the muzzle, and used the thrust of the bullet to push the tip out.

The beast was super keen to Earth Xuanjing. He didn't dodge the bullets at the moment, and suddenly leaned to the right back, and the tip of the bead with a blue cold light shone across his chest. Zhang Changgong's careful killing move was defeated again.

Arnold struggled to stand up. He pulled open his clothes and exposed the explosives tied to his body, and shouted: "Damn it! The worst thing is that we will die together. I have explosives arranged everywhere in my body and here, and we will die together!"

The beast was actually frightened by his aura and stood there hesitantly and dared not move forward.

Arnold lit the lead on his chest without hesitation.

The beast was not fearless. He stared at the rapidly burning lead on Arnold's chest, quickly made up his mind, turned around and fled backwards.
Chapter completed!